<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
    <meta name="format-detection" content="telephone=no,email=no,date=no,address=no"/>
    <title>vue</title>
    <style>
        [v-cloak]{
            display:none;
        }
    </style>
</head>
<body>
<div id="app" v-cloak>
    <input type="text" :value="name"/><br/>
    <button type="button" @click="classify.title='潮流女装2'">潮流女装</button>
    <button type="button" @click="name='王五'">{{getName}}</button>
    <button type="button" @click="name='李四'">获取值</button>
    <button type="button" @click="classify.children.title='大码女装'">{{classify.children.title}}</button>
</div>
<script src="js/vue.js"></script>
<script>
    new Vue({
            el: "#app",
            data() {
                return {
                    name: "张三",
                    classify: {
                        title: "潮流女装",
                        children: {
                            title: "女装",
                            children: {
                                title: "男装"
                            }
                        }
                    }
                }
            },
            computed: {
                getName() {
                    return this.name = "李四"
                }
            },
            watch: {
                name(newVal, oldVal) {
                    console.log(newVal, oldVal);
                },
                "classify.title"(newVal, oldVal) {
                    console.log(newVal, oldVal);
                },
                //监听computed里面的属性
                getName(newVal, oldVal) {
                    console.log(newVal, oldVal);
                },
                classify: {
                    handler(val) {
                        console.log(JSON.stringify(val));
                    },
                    deep: true//深度监听
                }
            }
        })
</script>
</body>
</html>
